7113 Iron Round Three-Piece Tin Can for Pet Food | Manufacturing & Benefits

7113 Iron Round Three-Piece Tin Can: Manufacturing Process for Pet Food Packaging

Pet food tin cans are the most mainstream and safe packaging containers for wet pet food, including canned cat food, dog food, and pet snacks. The 7113 iron round three-piece tin can is a classic customized packaging solution for the pet food industry, featuring high airtightness, food-grade safety, strong pressure resistance and long shelf-life performance. Strict standardised manufacturing processes are adopted throughout production to ensure the packaging meets global pet food safety and storage standards. This article details the complete pet food tin can manufacturing process for 7113 three-piece cans.

1. Food-Grade Raw Material Selection

The production of pet food tin cans strictly selects high-quality food-grade tin plate as the core raw material, which is the key to ensuring pet food safety. Different from ordinary industrial iron sheets, the tin plate used for 7113 pet food cans has uniform tin coating thickness, excellent corrosion resistance and non-toxic properties. Nearly 70% of high-grade tin plate globally is applied to food and pet food metal packaging, effectively isolating grease, moisture and acidic ingredients in pet wet food to avoid chemical reactions between the metal and contents. Meanwhile, qualified aluminium auxiliary materials are matched for can end production to ensure the overall structural stability of the three-piece cans.

2. Internal and External Protective Coating & Drying

Anti-corrosion and food-safe coating treatment is an essential process for pet food tin cans. Professional non-toxic food-grade coating is evenly sprayed on the inner and outer surfaces of the cut tin plate. The inner coating can effectively prevent metal oxidation and tin dissolution, completely avoiding contamination of pet food, while the outer coating plays a role in anti-rust, wear resistance and beautifying the appearance for printing brand information.

After spraying, the metal sheets are sent to a constant-temperature drying oven for curing treatment. Strict temperature and time control ensure the coating is firmly attached without peeling, blistering or peculiar smell, meeting international pet food packaging safety specifications.

3. Precision Sheet Cutting and Can Body Forming

After drying and curing, the coated metal plates are precisely cut into standard sizes matching the 7113 can model by professional shearing equipment. The standardised sheet blanks ensure uniform specifications and assembly accuracy of finished cans.

Subsequently, the sheet blanks are rolled and welded into tubular can bodies. As a typical three-piece can structure, the 7113 pet food can adopts longitudinal seam welding technology to form a seamless and firm can body structure. The welded cylindrical can body is called a can blank. This forming process effectively avoids cracking and leakage, ensuring the structural firmness of the can body during high-temperature sterilisation and long-term storage.

4. Can Body Inspection, Printing and Customisation

所有成型的罐坯均经过严格的质量检验，以剔除存在焊接缝隙、变形或涂层损坏的缺陷产品。合格的罐体支持定制胶印，可在外表面印刷宠物食品品牌标识、产品参数、配料信息和生产日期，以满足不同宠物食品品牌的个性化定制需求。

5. 宠物食品灌装与气密卷封

经检验合格的7113三片式马口铁罐进入自动化灌装车间，进行宠物湿粮灌装。在精确计量灌装宠物食品后，由专业多工位封罐机进行封罐。采用双重卷封气密技术，实现罐内宠物食品与外部空气、灰尘和细菌的完全隔离。

多工位封罐设备支持高效批量生产，封口压力稳定，卷封间隙均匀，有效防止宠物食品在储存和运输过程中出现漏气、漏液和霉变。

6. 高温杀菌与防腐处理

与普通包装罐不同，宠物食品罐需要严格的杀菌工艺以实现长期保存。所有封口后的成品罐被送入工业高压灭菌釜进行高温杀菌或巴氏杀菌处理。此过程彻底杀灭罐内的有害细菌、微生物和芽孢，抑制食品腐败变质。

经过杀菌和自然冷却后，宠物食品罐可实现无需防腐剂的常温长期储存，这是罐装宠物食品包装的核心优势。

7. 最终质量检验与成品包装

杀菌后，所有产品经过最终全面检验，包括气密性测试、外观检查、变形检测和泄漏检测。合格的7113宠物食品马口铁罐经过分选和批量包装，然后存放于干燥无尘的仓库中，准备运输和上市销售。

结论

7113马口铁圆型三片式宠物食品罐的制造工艺涵盖食品级原料选择、涂层固化、精密成型、定制印刷、气密密封、高温杀菌和严格质量检验。每一个生产环节均符合食品安全标准，为宠物湿粮打造安全、耐用、易长期保存的金属包装。凭借可靠的密封性能和稳定的品质，7113三片式宠物食品罐已成为全球各大宠物食品品牌的首选包装方案。