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Gluing And Bonding Process In Shoemaking Process

2008/8/8 15:46:00 41772

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First, Hong Kong Bao or COUNTER fit.

1, the Hong Kong Bao or COUNTER single side spray (also spray glue in the upper part of the upper part of the shoe to attach to port treasure or COUNTER place), spray glue quantity generally 2 - 3 grams / noodles.

2, glue the port or COUNTER to the upper side of the upper part of the shoe. First, fix the center point, then press the hands to the sides, press back and forth several times.

Two. Turn around.

1, paste foam: foam or heel neckline spray glue, spray amount is generally 2 - 3 grams / surface, then the foam and the heel neckline fit.

2, turn over the mouth: will paste the harbor shoe or COUNTER of the upper part of the heel, spray the glue on the side of the heel, spray the glue on the heel neckline, the general spray amount is generally 6 to 8 grams, then turn the neckline over the side of the upper part of the shoe, and then pull it tight to fix the center point, then press the hands to the sides, press back and forth several times.

Note: for porous materials such as foam, the contact area is small, the amount of glue is too diffuse or the glue thread is too thin, or the glue is not fit for a long time.

The above two operations are what we often call "sponge", corresponding to our company's gum species: DL-222/232/242/230, of which 222/230 is APAO, 222 is opaque yellowish white opaque colloid, 230 is yellow opaque colloid, 232/242 is SBS type, all are yellow pparent colloid, 242 is lighter, and 232 is sticky.

Three, vamp fit

1. Fit or strengthen the fit between the upper parts of the shoes. Generally, the spray type hot melt adhesive machine, such as the sponge used, has different requirements for the glue with the color of the shoe. Generally 222/232/242/230 can be used for this part, but there are specialized products for customers' preferences, such as DL-212/233/233A.

2. Fit between vamp accessories: generally used for roller wheel glue machine because of convenient operation, so it is also used to be called glue, usually 230, but also depending on customer preferences can choose the corresponding shoe upper.

According to Fujian Putian and Jinjiang production process design and personnel operation habits, there are 10 pairs of shoes above shoes phenomenon (and the Pearl River Delta shoe heap phenomenon is generally not so serious).

This requires that the adhesive must have enough opening time (more than 6 minutes); moreover, according to the local staff's understanding of glue, some think that it is sticky with initial adhesion or sticky hands, so glue is good, while others think that it is easy to operate with low initial adhesion, that is, stick to hands, so glue is good, plus pparent and opaque appearance, so many varieties are derived.

In fact, the theory of sticky hands and non stick hands, pparent and opaque is that business attacks each other in the competition and is instilled into the use of the concept of personnel, but it has become our standard before judging whether the glue is good or bad.

According to this understanding and operation status, Fujian shoe hot-melt adhesive can be divided into four parts:

1, the appearance of opaque APAO type hot-melt adhesive, such as Cheng Tai's 705C, Kailin's 3315/8310, shoe upper and sponge can be used, corresponding to DL-222.

2, the appearance of pparent yellow SBS type hot-melt adhesive, such as 9627 of the deep constant, 998 of the Jiabao, Anta glue, shoe polish and sponge can be used, corresponding to the company's DL-242.

3, the pparent yellow SBS type hot melt adhesive, such as Chang De's 805, Jian Bang 5327, etc., the general shoe upper glue and Bao Haimian are all separated from the glue type to cooperate, corresponding to DL-232 of the company.

4, the appearance of opaque low-grade APAO hot melt adhesive, such as Zhejiang Yida glue, general packet sponge, shoe upper glue, glue can be universal, corresponding to the company's DL-230.

Among them, 1 of the price is expensive, the general factory uses; 2 the price is moderate, the larger factory uses; 3, the 4 price is low, the small and medium-sized factories use.

Looking at the overall market situation, 2 and 3 should be the market targets of our company's key attack, and the opening time is the key to the combination of the current production of rubber products and the local market. 229/197/199/237/232 and others all have this defect.

Four. Spray type hot melt adhesive machine operation

1, temperature: the rubber grooves are 150-180 degrees, the pipes are 160-190 degrees, the nozzles are 170-190 degrees, the general rubber grooves are less than the pipes, the temperature difference is 5-10 degrees, the rubber grooves are usually at 150-160 degrees Celsius, and they can not be longer than 180 degrees Celsius. They must not be higher than 200 degrees Celsius.

2. Wind pressure: the total wind pressure is 3-5kgf, and the pressure of the nozzle is 2-3 KGF.

3. Apron: 2.5-3.0cm, uniform.

4. The distance between material and nozzle is about 10cm.

Five. Operation of roller gluing machine

1, temperature: according to the consistency of the glue, it is recommended that the rubber grooves be 150-170 degrees centigrade and the roller 160-180 degrees.

2, glue adjustment: adjust the thickness of the roller to adjust the thickness of the glue to determine the thickness of the roller.

Six, glue machine maintenance

The quality of the glue machine has a decisive influence on the reaction of the rubber properties. The hot melt glue machine is usually cleaned once a week for 6 weeks, the filter net and the nozzle are cleaned once a week, every 6 months to check whether the heater of each part is normal.

Seven, common problems and elimination of shoe adhesive

(1) glue is not smooth, there is no dispersing phenomenon or granular.

1, pay attention to whether the temperature setting of each part of the glue machine meets the standard, and determine whether the temperature is up to the standard, if the temperature is too low, the temperature should be adjusted to the standard range.

2. Observe whether there are different kinds of rubber seeds mixed in the rubber grooves. If there are different kinds of rubber species that are not mutually soluble, they should remove residual glue and reuse glue.

3, if the above two aspects are all right, check the matching of wind pressure and glue quantity and adjust the machine.

(two) spray finish, then press for a period of time before opening.

1, check the glue quantity is enough, especially for porous materials, such as not enough to increase the amount of glue.

2, check the gel condition, according to the gel condition to determine whether it is glue in the opening time of the fit?

Is the glue not adhesive to the material?

Is glue cohesive force insufficient?

3. Do you want to see whether there is sticky phenomenon in the glue?

If there is, the oil is exuded from the material, resulting in the failure of bonding.

4. If you cannot tell the reason, you should send the upper part of the glue to the company and check it again.

(three) followed by inner overflow

1, check the glue quantity is too large, if adjust the glue quantity.

2, check whether the glue pressure is too large, if adjust the wind pressure.

3, check whether the scope of spraying is in the standard line, if not adjust the scope of spray glue.

4. Check whether the temperature and pressure are too high. If the temperature and pressure can be adjusted, if the overflow happens in the heating box, replace the glue.

(four) there are granular bump on the heel.

1, check whether the glue is not dispersed, such as adjusting the glue spraying system, improving the spray of the sewing machine.

2, check whether the glue is too large, for example, adjust the spray system, improve the sewing machine spray.

3, check whether the cold and heat setting temperature and pressure are caused by the shift of glue after cold and hot setting.