Foamed and molded cup and manufacturing method thereof

Abstract

The invention relates to a foamed and molded cup, which comprises a main material and an auxiliary material. The main material comprises the following components in parts by weight: 60-70 parts of polyether glycol and 25-27 parts of toluene diisocyanate, and the auxiliary material comprises the following components in parts by weight: 2-2.5 parts of L-580 silicone bubbling agent, 0.65-0.7 parts of stannous octoate T-9 tin catalyst, 0.5-0.7 parts of A-33 alkylamine or A-1 alkylamine amine catalyst, 0.1-0.15 parts of methylene dichloride or fluoro trichloromethane as a foaming agent, 0.05-0.12 parts of water and 15-20 parts of CaCO3 powder. A manufacturing method of the foamed and molded cup comprises the following steps of: processing a cup mold, brushing a demolding agent on the mold, obtaining volume data of forming the cup by the mold, preparing the materials, agitating the prepared materials, injecting the mixed materials in the mold, cooling and solidifying the cup, and curing the cup. The foamed and molded cup is light in weight, flexible in hand feeling, long in service life and good in breathability and is quick to produce.

Description

technical field [0001] The invention relates to a foam molding cup and a manufacturing method thereof. Background technique [0002] The cup products currently produced all use molds to heat-set the foamed cuboid foam through high-temperature heat-setting technology, so that they become cups of the designed shape; [0003] The technical parameters of foam commonly used in bra cup heat setting are as follows: [0004] [0005] Remarks: Density: The density of the sponge before heat setting. [0006] Hardness: The hardness of the sponge before heat setting. [0007] Compression ratio: the ratio of the thickness before heat setting to the thickness after heat setting. [0008] Average density after heat setting: the average density of the cup after heat setting (the ratio of the total mass of the cup to the total volume of the cup). [0009] Average hardness after heat setting: the average value of the hardness of the thick and thin parts of the cup. [0010] Due to tec...

AI Technical Summary

Problems solved by technology

[0013] 2. In the process of making high-temperature heat-set cups, the original three-dimensional five-sided twelve-sided nuclei inside the foam will be squeezed because the raw material foam for making the cups is heat-pressed, and the nuclei contain 30 The first pillar will be deformed, thereby losing its original elastic structure, causing the original elastic recovery of the foam to be destroyed, resulting in such cup products feeling hard and poor in comfort;

[0014] 3. Due to the high temperature hot pressing involved, the hot pressing temperature is usually 200 degrees Celsius. At this temperature, the foam will have a vitrification effect and will be shaped after cooling; this hot pressing process completely changes the original properties of the foam. A performance index, it is difficult to control the change of performance during the production of bra cups;

[0015] 4. The foam is compressed and formed into a cup, which is converted from a flat state to a three-dimensional state by high temperature and high pressure. The processing process destroys the original physical form of the foam and squeezes the cells of the foam itself, so after heat setting The density of the sponge inside the treated cup is already several times that of the original sponge, so that its air permeability cannot reach the ideal effect as a cup, especially in summer, the heat-set cup has poor moisture absorption and the volatilization speed of sweat stains is slow, thus causing the chest produce a stuffy feeling;

[0016] 5. High-temperature heat-set cups need to be bonded by polymer polyurethane adhesives. During the heat-setting process, both foam and polymer polyurethane adhesives will volatilize gas, which will affect the health of operators. healthy;

[0017] 6. High-temperature heat-set cups need to be bonded during production and processing. The time required for the bonding process is usually 16 hours, resulting in low production efficiency;

[0018] 7. Since the foam material is heat-set and its original properties are destroyed, it is necessary to pay great attention to its preservation method when making the molded cups. For example, the shape of the cups may change after being improperly placed or squeezed, and it is difficult to restore and the top of the cups Subsidence and other conditions affect the wearability of the whole product and reduce the service life of the product; after wearing for a period of time, the cup will be deformed after repeated washing, which will affect the effect of the product after wearing and the product life.

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