1、 Production process flow

二、印刷

2、 Printing

凹版印刷：是指将原稿上的文字、图案制成印版，在印版表面涂上油墨，通过压力使印版上的图文转移到被印材料的表面上，准确地、大量地复制出与原稿相同的印刷品。

Gravure printing: refers to making a printing plate from the text and pattern on the original, applying ink on the surface of the printing plate, and transferring the image and text on the printing plate to the surface of the printed material through pressure, so as to accurately and massively reproduce the same printed matter as the original.

分表印和里印。

It is divided into table printing and internal printing.

三、复合

3、 Compound

塑料复合软包装基本原理：每种材料有不同的优缺点，通过媒介（如胶水）将二层或二层以上的材料粘合在一起，使包装膜、袋达到更好性能的技术。这种技术在生产工序中叫“复合工序”。

The basic principle of plastic composite flexible packaging: each material has its own advantages and disadvantages. It is a technology that uses media (such as glue) to bond two or more layers of materials together to make the packaging film and bag achieve better performance. This technology is called "composite process" in the production process.

四、熟化

4、 Ripening

熟化的目的是加快材料之间的胶水固化的速度。

The purpose of curing is to accelerate the speed of glue curing between materials.

五、分切

5、 Slitting

将印刷、复合好的材料分切成客户所需的规格。

Cut the printed and composite materials into the specifications required by customers.

六、制袋

6、 Bag making

将印刷、复合、分切好的材料制成客户所需的各式袋子。可制做多种袋型：中封袋、边封袋、直立袋、K型袋、R袋、四边封袋、拉链袋。

The printed, composite and cut materials are made into various bags required by customers. It can be made into a variety of bag types: middle seal bag, side seal bag, upright bag, K-type bag, R-type bag, four-side seal bag, zipper bag.

七、品质控制

7、 Quality control

1、原材料入库前检测

1. Inspection of raw materials before warehousing

2、产品在线检测

2. Product online inspection

印刷品检—残留溶剂、套位等

Print inspection - residual solvents, sockets, etc

复合品检—复合强度、气泡、起皱等

Composite inspection - composite strength, bubbles, wrinkling, etc

制袋品检—封口强度、尺寸偏差等

Bag making inspection - sealing strength, size deviation, etc

3、产品出货前品检

3. Product inspection before shipment

八、常用印刷材料

8、 Common printing materials

BOPP

BOPP

双向拉伸聚丙烯，它是经过双向拉伸后形成的薄膜，没有热封性能，常用作印刷材料，因其有优越的防湿性能，适用于易吸潮的饼干、凉果、膨化食品、瓜子等的表层印刷材料。

Biaxially stretched polypropylene, which is a film formed after biaxial stretching, has no heat sealing property, and is often used as a printing material. Because of its excellent moisture resistance, it is suitable for the surface printing materials of biscuits, cold fruits, puffed foods, melon seeds, etc. that are easy to absorb moisture.

KOP

KOP

涂层双向拉伸聚丙烯，是在OPP表面涂了一层约1-2um的聚偏二氯乙烯（PVDC，也叫K涂层），所以KOP既有OPP的性能，又有PVDC有优点。常用于月饼等需隔氧及隔水的食品。KOP具有类似铝薄的阻隔功能，又透明、可以看见包装内容物。

Coated biaxially oriented polypropylene is coated with a layer of about 1-2um polyvinylidene chloride (PVDC, also known as K coating) on the surface of OPP, so KOP has both the properties of OPP and the advantages of PVDC. It is often used for moon cakes and other foods requiring oxygen and water separation. KOP has the barrier function similar to aluminum thin, and it is transparent and can see the contents of the package.

PCO

PCO

双向热封聚丙烯膜，其有OPP的性能，又有双面热封的性能；常用于磁盘、紫菜的包装。

Two-way heat sealing polypropylene film has the properties of OPP and double-sided heat sealing; It is often used for the packaging of disk and laver.

PL

PL

双向热封聚丙烯珠光膜，是以聚丙烯树脂为主要原料，加入一定量的珠光粉料，经双向拉伸而成。用于化妆品、香皂、标签等的包装。

Bi-directional heat-sealing polypropylene pearlescent film is made of polypropylene resin as the main raw material, adding a certain amount of pearlescent powder, and biaxially stretching. Used for packaging cosmetics, soap, labels, etc.

PET

PET

聚脂膜

Polyester film

和OPP一样，是在纵向拉伸后进横向拉伸的二级双向拉伸蒲膜，或纵横同时拉伸，而后热固定的拉伸膜。常用作机器包装卷膜、高温蒸煮袋、拉链袋等产品的印刷材料。

Like OPP, it is a two-stage biaxial stretch film that is stretched horizontally after longitudinal stretch, or a stretch film that is stretched vertically and horizontally at the same time, and then thermally fixed. It is often used as the printing material for machine packaging film, high-temperature cooking bag, zipper bag and other products.

KPET

KPET

中文名：涂层聚脂膜，是PET表面涂了一层约1-2um的聚偏二氯乙烯（PVDC，也叫K涂层）。

Chinese name: coated polyester film is a layer of polyvinylidene chloride (PVDC, also known as K coating) with a thickness of 1-2um on the surface of PET.

所以KPET既有PET的性能，又有PVDC有优点。常用于月饼等需隔氧及隔水的食品。和KOP一样，具有类似铝薄的阻隔功能，又透明、可以看见包装内容物。其的耐高温性能使其更适合机器包装及其他需高耐高温的袋型。

Therefore, KPET has both the performance of PET and the advantages of PVDC. It is often used for moon cakes and other foods requiring oxygen and water separation. Like KOP, it has the barrier function similar to aluminum thin, and is transparent and can see the contents of the package. Its excellent high temperature resistance makes it more suitable for machine packaging and other bag types requiring high temperature resistance.

NY

NY

尼龙，抽真空包装、冷冻、高温蒸煮食品的包装；常用厚度为15um，因为很薄，所以摆动起来很响；密度为1.15g/cm3。

Nylon, vacuum packaging, frozen, high-temperature cooking food packaging; The commonly used thickness is 15um, because it is very thin, so it swings very loud; The density is 1.15g/cm3.

PVC

PVC

聚氯乙烯，一般用于瓶樽的标签，单层材料，印刷完成不需复合，需用PVC胶水（酒精与环已酮1：1配比）粘合；常用厚度：40um。

PVC, which is generally used for labels of bottles and bottles, is a single-layer material. It does not need to be compounded after printing, but needs to be bonded with PVC glue (1:1 ratio of alcohol and cyclohexanone); Common thickness: 40um.

Mat-opp

Mat-opp

双向拉伸聚丙烯消光膜，常用于膨化食品、月饼、纸巾、化妆品的包装。

Biaxially stretched polypropylene matting film is often used for packaging puffed food, moon cakes, paper towels and cosmetics.

九、常用复合材料

9、 Common composite materials

CPP

CPP

未拉伸聚丙烯，其与经过拉伸的OPP不同，CPP是在薄膜成形后保持原有关态下进行冷却固化的。CPP是常用的热封材料。作为印刷材料常用作纸巾的包装；作为复合材料，常用作与其它材料一起复合，作为热封层。

Unstretched polypropylene is different from stretched OPP. CPP is cooled and solidified after the film is formed and kept in the original off state. CPP is the most commonly used heat sealing material. As a printing material, it is often used as the packaging of paper towels; As a composite material, it is often used to composite with other materials as a heat seal.

PET

PET

未拉伸聚乙烯，常用PE有IPE、CPE、LLDPE、普通PE。和CPP一样是常用的热封材料。用于包装奶粉、洗发水、洗衣粉等化工产品。除常用作表层印刷材料外，也可作为复合材料，其没有热封性能，不能放在热封层，一般用作产品中间复合层，可以增加袋子挺度及阻隔氧气性能。

Unstretched polyethylene, commonly used PE include IPE, CPE, LLDPE and ordinary PE. Like CPP, it is the most commonly used heat sealing material. It is used for packaging chemical products such as milk powder, shampoo and washing powder. In addition to being used as surface printing material, it can also be used as composite material. It has no heat sealing performance and cannot be placed on the heat sealing layer. It is generally used as the intermediate composite layer of the product, which can increase the stiffness of the bag and block oxygen performance.

VMPET

VMPET

镀铝聚酯膜，即在PET表面蒸镀了一层铝箔，兼有PET的性能，又有铝箔的性能。

Aluminized polyester film, that is, a layer of aluminum foil is evaporated on the surface of PET, which has the properties of both PET and aluminum foil.

VMCPP

VMCPP

镀铝未拉伸聚丙烯，即在CPP表面蒸镀了一层铝箔，兼有CPP与AL的性能。

Aluminized unstretched polypropylene, that is, a layer of aluminum foil is evaporated on the surface of CPP, which has the properties of CPP and AL.

AL

AL

铝箔，隔绝性与遮光性很好。铝箔本身强度低，无热粘合性，折叠处易断裂，所以很少单独使用，一般用于对氧气和水份非常敏感的产品，复合软包装，具有非常好的防潮、防氧及防紫外线性能。

Aluminum foil, good insulation and shading. Aluminum foil has low strength, no thermal adhesion, and is easy to break at the fold, so it is rarely used alone. It is generally used for products that are very sensitive to oxygen and moisture. Advanced composite flexible packaging has very good moisture, oxygen and ultraviolet protection properties.

NY

NY

尼龙，除常用作表层印刷材料外，也可作为复合材料，其没有热封性能，不能放在热封层，一般用作产品中间复合层，可以增加袋子的封口强度和耐刺扎性；常用于需耐压力和耐高温的袋子的中间层。比如果冻袋、洗衣液袋、板栗袋等。其耐油的性能适用于包装肉食和其他油性较重的产品。

Nylon, in addition to being used as surface printing material, can also be used as composite material. It has no heat sealing performance and cannot be placed in the heat sealing layer. It is generally used as the intermediate composite layer of the product, which can increase the sealing strength and puncture resistance of the bag; It is often used in the middle layer of bags that need to be resistant to pressure and high temperature sterilization. Such as frozen bag, detergent bag, chestnut bag, etc. Its oil resistance is suitable for packaging meat and other products with heavy oil.

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