{"id":1196,"date":"2026-08-18T07:40:22","date_gmt":"2026-08-18T07:40:22","guid":{"rendered":"https:\/\/ever-powers.com\/?p=1196"},"modified":"2026-08-18T07:54:44","modified_gmt":"2026-08-18T07:54:44","slug":"food-grade-pet-blow-molding-fda-eu-compliance","status":"publish","type":"post","link":"https:\/\/ever-powers.com\/nl\/application\/food-grade-pet-blow-molding-fda-eu-compliance\/","title":{"rendered":"Food-Grade PET Blow Molding: FDA 21 CFR and EU 10\/2011 Compliance for Jar Production"},"content":{"rendered":"

\"Water<\/p>\n

Food-contact plastic containers occupy one of the most tightly regulated segments of the blow molding industry. The machine that produces a 1,000ml honey jar is subject to the same legal framework as the container that ends up on a supermarket shelf in Frankfurt or Sacramento \u2014 regardless of where the jar was manufactured. Regulatory compliance for food-grade PET containers is not a documentation exercise performed after production; it is an engineering constraint that begins at preform resin selection and runs through every process parameter the blow molding machine controls.<\/p>\n

<\/p>\n

\n

The Two Regulatory Frameworks That Govern Food-Grade PET Containers<\/h2>\n<\/div>\n

Food-contact plastic packaging is regulated at the national level in the US and at the EU level in Europe, with additional national implementation layers in individual member states. The two frameworks that most B2B buyers \u2014 particularly those exporting to North America and Europe \u2014 need to understand are FDA 21 CFR Part 177 and EU Regulation 10\/2011.<\/p>\n\n\n\n\n\n\n\n\n
Framework<\/th>\nJurisdiction<\/th>\nKey Requirement<\/th>\nPET-Specific Provision<\/th>\n<\/tr>\n<\/thead>\n
FDA 21 CFR 177.1315<\/td>\nUnited States<\/td>\nResin must be produced from approved monomers and additives listed in the regulation. Extractables testing required for certain end-use conditions.<\/td>\nPET (polyethylene terephthalate) specifically listed. Intrinsic viscosity (IV) range and additive restrictions defined.<\/td>\n<\/tr>\n
EU Reg. 10\/2011<\/td>\nEuropean Union<\/td>\nOverall migration limit (OML): 10 mg\/dm\u00b2 or 60 mg\/kg of food. Specific migration limits (SML) per listed substance.<\/td>\nAcetaldehyde (AA) migration limit: 6 \u00b5g\/kg for mineral water and beverages. Relevant for PET jar production running dry-food formats.<\/td>\n<\/tr>\n
GB 9685-2016<\/td>\nChina<\/td>\nApproved additive list for food-contact plastics. Mandatory for domestic market and increasingly relevant for export declarations.<\/td>\nAdditive restrictions align broadly with EU Annex I substances but differ in specific migration limits for several UV stabilizers.<\/td>\n<\/tr>\n
LFGB \u00a730\/31<\/td>\nDuitsland<\/td>\nNational implementing law for EU 10\/2011. BfR recommendations add substance-specific limits stricter than the EU baseline.<\/td>\nBfR Recommendation XXII for PET: stricter AA limits and additional restrictions on recycled-content use in multi-layer structures.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

Practical implication for machine buyers:<\/strong> The regulatory framework does not prescribe machine specifications \u2014 it prescribes container performance outcomes (migration limits, extractables ceilings). The machine specification question is: which process parameters control the outcomes that matter? The answer determines what the blow molding machine must be capable of controlling to produce compliant containers.<\/p>\n<\/div>\n

<\/p>\n

\n

Acetaldehyde Generation: The Process Variable That Drives EU 10\/2011 Compliance<\/h2>\n<\/div>\n

Acetaldehyde (AA) is a thermal degradation product of PET. It is generated whenever PET is heated above its melt temperature \u2014 in the injection stage, in the conditioning station, and to a lesser extent during blow air heating contact. AA migration from PET containers into food is the most commonly tested compliance parameter for food-grade PET jars and is the parameter most directly controlled by the blow molding machine’s thermal management.<\/p>\n

AA Generation Mechanisms and Machine Control Points<\/p>\n\n\n\n\n\n\n\n
Generation Point<\/th>\nPhysical Mechanism<\/th>\nMachine Control Lever<\/th>\nAA Contribution<\/th>\n<\/tr>\n<\/thead>\n
Injection melt temperature<\/td>\nThermal scission of PET chains at the ester linkage above 270 \u00b0C produces AA as a byproduct<\/td>\nBarrel temperature profile; screw speed; residence time in barrel<\/td>\nPrimary (~70%)<\/span><\/td>\n<\/tr>\n
Conditioning station heat<\/td>\nIR lamp energy absorbed by preform surface can trigger surface-layer AA generation if preform surface exceeds 130 \u00b0C<\/td>\n10-zone lamp output map; conditioning dwell time; preform surface temperature ceiling<\/td>\nSecondary (~25%)<\/span><\/td>\n<\/tr>\n
Blow air temperature<\/td>\nHigh-pressure blow air at ambient temperature has negligible thermal contribution to AA generation<\/td>\nNot a significant control point \u2014 air temperature management is a preform thermal issue, not a blow stage issue<\/td>\nNegligible (<5%)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

On a one-step ISBM machine, the injection barrel temperature is the dominant AA control parameter. For food-grade PET jar production, the recommended barrel temperature ceiling is 270\u2013275 \u00b0C<\/strong> at the front zone. Above 280 \u00b0C, AA generation rate approximately doubles for every 10 \u00b0C increase, based on PET degradation kinetics data from resin supplier technical datasheets.<\/p>\n

\n

HGA series injection control:<\/strong> The HGA series injection station uses servo-controlled screw speed and back pressure, with barrel temperature held to \u00b12 \u00b0C of set point across zones. For food-grade jar production, the front zone set point is typically programmed at 268\u2013272 \u00b0C \u2014 below the AA acceleration threshold \u2014 and monitored continuously. The servo back pressure control maintains consistent melt homogeneity, which prevents localized hot spots in the melt stream that cause disproportionate AA generation in specific preform wall zones.<\/p>\n<\/div>\n

Conditioning Station AA Risk \u2014 Surface Temperature Ceiling<\/p>\n

The preform surface temperature ceiling in the conditioning station for food-grade PET jar production should not exceed 118\u2013122 \u00b0C<\/strong> at the body zone. Above 125 \u00b0C, the preform surface undergoes measurable additional AA generation during the 8\u201314 second conditioning dwell. On the HGA ES-platform machine, the 10-zone IR lamp output map is configured with a temperature ceiling alarm: if any zone IR thermometer reading exceeds the set ceiling, the machine pauses the cycle and logs the deviation. This capability \u2014 continuous thermal monitoring with cycle-level intervention \u2014 is a compliance-relevant machine feature, not a production convenience.<\/p>\n

\"Quality<\/p>\n

\n

Machine-Level Requirements for FDA 21 CFR Food-Grade Jar Production<\/h2>\n<\/div>\n

FDA 21 CFR 177.1315 does not specify machine performance requirements \u2014 it specifies the resin composition and end-use conditions under which PET containers are acceptable for food contact. However, maintaining compliance with the resin specification requires that the machine does not alter the resin’s chemical properties during processing. Three machine-level requirements emerge from this framework:<\/p>\n

<\/p>\n\n\n\n
\n
\n
Requirement 01<\/div>\n
Temperature Traceability<\/div>\n
Every production run must have a logged record of barrel zone temperatures, conditioning station peak surface temperatures, and deviations from set points. The HGA PLC system logs all thermal parameters at cycle level \u2014 exportable as CSV for inclusion in food safety documentation files (FSSC 22000, BRC, IFS).<\/div>\n<\/div>\n<\/td>\n
\n
\n
Requirement 02<\/div>\n
No Lubricant Contamination<\/div>\n
Food-grade PET containers cannot have lubricant contamination from the machine’s mechanical systems. The HGA series uses food-grade lubrication (NSF H1-rated) in all zones where lubricant could contact a preform or container \u2014 specifically the preform handling chain, transfer arm bearings, and mold guide rails.<\/div>\n<\/div>\n<\/td>\n
\n
\n
Requirement 03<\/div>\n
Particulate Exclusion<\/div>\n
Metallic particles from mechanical wear must not enter the preform or container interior. The HGA mold clamping system uses linear guide bearings with sealed housings \u2014 not open slide rails \u2014 preventing wear debris from falling into the container open neck during the blow and cooling cycle.<\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/p>\n

\n

EU 10\/2011 Overall Migration Testing: What the Machine Controls and What It Does Not<\/h2>\n<\/div>\n

EU Regulation 10\/2011 requires that food-contact materials do not transfer substances to food in quantities that exceed the overall migration limit (OML) of 10 mg\/dm\u00b2 or 60 mg\/kg of food. For PET containers, the substances contributing to migration are primarily oligomers, residual monomers (terephthalic acid, ethylene glycol), and processing additives from the resin formulation.<\/p>\n

The blow molding machine controls one factor that directly affects migration levels: the degree of biaxial orientation achieved during the blow cycle<\/strong>. A well-oriented PET container wall has lower permeability to migrating substances than an under-oriented wall \u2014 because biaxial orientation increases the crystallinity of the amorphous PET matrix, reduces free volume in the polymer network, and creates a more tortuous diffusion path for small molecules.<\/p>\n\n\n\n\n\n\n\n\n
Process Parameter<\/th>\nEffect on Biaxial Orientation<\/th>\nEffect on Migration<\/th>\nMachine Control<\/th>\n<\/tr>\n<\/thead>\n
Planar stretch ratio (SRa<\/sub> \u00d7 SRh<\/sub>)<\/td>\nHigher SR \u2192 more orientation<\/td>\nLower migration rate<\/td>\nPreform geometry + container design (set at mold design stage)<\/td>\n<\/tr>\n
Conditioning temperature<\/td>\nOptimal window \u2192 uniform orientation<\/td>\nLower and more consistent migration<\/td>\n10-zone IR lamp map on HGA ES platform<\/td>\n<\/tr>\n
Blow pressure ramp rate<\/td>\nToo fast \u2192 uneven orientation in base zone<\/td>\nHigher migration at base<\/td>\nPre-blow timing and main blow pressure set in PLC recipe<\/td>\n<\/tr>\n
Cooling dwell time<\/td>\nInsufficient cooling \u2192 relaxation of orientation<\/td>\nIncreased migration (relaxed structure)<\/td>\nMold-hold time in PLC recipe; cooling water flow and temp<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

What the machine does not control:<\/strong> The resin’s inherent migration potential \u2014 determined by the additive package, IV, and resin grade \u2014 is fixed at the raw material level. If the resin does not meet FDA 21 CFR 177.1315 or EU 10\/2011 substance list requirements, no machine parameter adjustment will bring the container into compliance. Resin selection with a food-contact declaration from the supplier is the first compliance step; machine parameter optimization is the second.<\/p>\n<\/div>\n

<\/p>\n

\n

Wide-Mouth Jar Production: Compliance-Relevant Machine Considerations<\/h2>\n<\/div>\n

Food jars \u2014 wide-mouth containers for dry foods, sauces, honey, condiments \u2014 introduce compliance considerations that narrow-neck beverage bottles do not. The larger neck diameter (typically 68\u2013168mm versus 28\u201338mm for beverages) creates specific structural and sealing requirements that have regulatory implications.<\/p>\n\n\n\n\n\n\n\n\n
Container Feature<\/th>\nCompliance Relevance<\/th>\nMachine Parameter That Controls It<\/th>\n<\/tr>\n<\/thead>\n
Neck sealing surface flatness<\/td>\nAn out-of-flat sealing surface allows gas ingress and microbial contamination \u2014 a food safety (not just quality) failure<\/td>\nInjection holding pressure accuracy (\u00b11% on HGA series); cooling water temperature at mold inlet (8\u201312 \u00b0C, \u00b11 \u00b0C). Sealing surface flatness specification: typically \u00b10.08mm for food jar closures<\/td>\n<\/tr>\n
Base zone wall thickness<\/td>\nThin base walls are the first point of failure in top-load compression testing (stacking compliance for retail distribution)<\/td>\nPre-blow pressure timing relative to stretch rod position; base zone lamp output in conditioning station. Target base wall thickness: typically 1.8\u20132.4mm for 1,000ml food jars<\/td>\n<\/tr>\n
Container headspace volume consistency<\/td>\nNet content declaration accuracy (EU Directive 76\/211\/EEC; US Fair Packaging and Labeling Act) requires consistent container volume at the nominal fill line<\/td>\nServo clamping position repeatability (\u00b10.1mm on HGA series) controls body diameter consistency, which directly controls internal volume at the fill-line height<\/td>\n<\/tr>\n
Incision-free wide-mouth can format<\/td>\nStandard trimming operations on wide-mouth cans create an exposed cut edge \u2014 a contamination risk in food environments that requires additional edge treatment<\/td>\nThe FS-1CG220 incision-free blowing system forms the complete can mouth in the mold. No trimming station needed \u2014 no exposed edge, no contamination risk point. Body diameter up to 190mm, neck diameter up to 138mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/p>\n

\n

Veelgestelde vragen<\/h2>\n<\/div>\n
\n\u25b6 \u00a0Does the blow molding machine need to be CE-marked for EU food-grade production?<\/summary>\n
CE marking under the EU Machinery Directive (2006\/42\/EC) applies to the machine as a piece of equipment \u2014 it certifies that the machine meets EU safety requirements, not that the containers it produces are food-contact compliant. The HGA series machines carry CE marking on electrical cabinets, pneumatic circuits, and guarding systems. This is a separate certification from EU 10\/2011 container compliance. Both are required for food-grade production sold into EU markets: CE marking for the equipment, and EU 10\/2011 compliance for the containers. A machine without CE marking used in an EU plant creates a workplace safety liability; a machine with CE marking producing non-compliant containers creates a product liability.<\/div>\n<\/details>\n
\n\u25b6 \u00a0Can rPET (recycled PET) be used in food-grade jar production under EU 10\/2011?<\/summary>\n
rPET for food-contact use in the EU must be produced through a decontamination process approved under EU Regulation 282\/2008 (now incorporated into 10\/2011 Annex II for recycled plastics). The recycled PET feedstock must have undergone a validated decontamination challenge test demonstrating removal of surrogate contaminants to below the migration thresholds. The blow molding machine itself does not make rPET food-safe \u2014 the decontamination process at the recycler level does. The machine’s contribution is ensuring the processing temperature and residence time do not re-introduce degradation products that exceed migration limits. The same barrel temperature ceiling (270\u2013275 \u00b0C) that controls virgin PET AA generation applies to rPET \u2014 and is more critical, because rPET typically has a wider IV distribution and higher initial AA content than virgin resin.<\/div>\n<\/details>\n
\n\u25b6 \u00a0What documentation does the machine provide to support food safety certification audits?<\/summary>\n
The HGA series PLC system logs all production parameters at cycle level, including: barrel zone temperatures (all zones, every cycle), conditioning station lamp outputs and dwell times, blow pressure profiles, mold cooling water temperature and flow rate, machine stop events and alarm codes. These logs are stored in the machine’s onboard memory and can be exported via USB or network connection in CSV format. For BRC, IFS, FSSC 22000, or SQF audits, the relevant records are the thermal deviation logs \u2014 confirming that no production cycle exceeded the specified temperature ceiling for food-grade processing. The machine does not generate Declaration of Compliance (DoC) documents; those are the responsibility of the container manufacturer based on resin supplier DoCs and in-house migration testing records.<\/div>\n<\/details>\n
\n\u25b6 \u00a0Is PETG food-contact compliant under EU 10\/2011 and FDA 21 CFR?<\/summary>\n
PETG (glycol-modified PET) is produced from the same base monomers as PET (terephthalic acid + ethylene glycol) plus CHDM (1,4-cyclohexanedimethanol) as the glycol modifier. CHDM is listed in EU 10\/2011 Annex I (substance No. 155) with a specific migration limit of 5 mg\/kg food. Standard food-grade PETG grades from major resin suppliers (Eastman Tritan, SK Chemicals) are formulated to meet this SML and carry food-contact declarations for general food use. The FDA 21 CFR compliance of PETG is governed by the additive package \u2014 the base polymer monomers are generally recognized as acceptable, but UV stabilizers and other additives must be checked against the approved substance list for the intended end-use temperature and food type. Always obtain a food-contact Declaration of Compliance from the resin supplier before beginning food-grade production in PETG.<\/div>\n<\/details>\n
\n\u25b6 \u00a0How does the HGA food jar machine handle the transition from food-grade to non-food production on the same line?<\/summary>\n
The machine itself has no food-specific components that require different handling for non-food production. The practical concern is resin changeover: if the previous production run used a non-food-grade resin (e.g., with UV stabilizers not listed for food contact), the barrel must be purged with food-grade virgin PET to below the detection threshold for the non-approved additive before resuming food-grade production. Standard practice is a 3\u20135 barrel-volume purge with food-grade virgin PET at nominal processing temperature, followed by an AA level check on the first 20 preforms using a headspace GC method. The machine’s recipe memory stores food-grade and non-food-grade parameter sets separately \u2014 switching between recipes does not automatically clear the barrel; the purge procedure is a human operations step, not a machine control action.<\/div>\n<\/details>\n

<\/p>\n

\n

Specifying a food-grade PET jar line?<\/p>\n

Share your container volume, neck diameter, food type, and target market \u2014 and receive a machine model recommendation with food-compliance documentation checklist within 24 hours.<\/p>\n

View Food Jar Machine Range \u2192<\/a><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

Food-contact plastic containers occupy one of the most tightly regulated segments of the blow molding industry. The machine that produces a 1,000ml honey jar is subject to the same legal framework as the container that ends up on a supermarket shelf in Frankfurt or Sacramento \u2014 regardless of where the jar was manufactured. Regulatory compliance […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[43],"tags":[55,54,53],"class_list":["post-1196","post","type-post","status-publish","format-standard","hentry","category-isbm-machine-blog","tag-eu-10-2011-plastic-containers","tag-fda-21-cfr-packaging","tag-food-grade-pet-blow-molding"],"_links":{"self":[{"href":"https:\/\/ever-powers.com\/nl\/wp-json\/wp\/v2\/posts\/1196","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ever-powers.com\/nl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ever-powers.com\/nl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ever-powers.com\/nl\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ever-powers.com\/nl\/wp-json\/wp\/v2\/comments?post=1196"}],"version-history":[{"count":5,"href":"https:\/\/ever-powers.com\/nl\/wp-json\/wp\/v2\/posts\/1196\/revisions"}],"predecessor-version":[{"id":1204,"href":"https:\/\/ever-powers.com\/nl\/wp-json\/wp\/v2\/posts\/1196\/revisions\/1204"}],"wp:attachment":[{"href":"https:\/\/ever-powers.com\/nl\/wp-json\/wp\/v2\/media?parent=1196"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ever-powers.com\/nl\/wp-json\/wp\/v2\/categories?post=1196"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ever-powers.com\/nl\/wp-json\/wp\/v2\/tags?post=1196"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}