EPS foam article and production technology thereof

A production process and product technology, which is applied in the field of EPS foam products and its production process, can solve the problems of affecting the reliability of solenoid valve action, the accuracy of mechanical action, the large amount of instantaneous use, and the waste of water resources, etc., to shorten the drying time, Low apparent density and low maintenance cost

CN108044858AInactive Publication Date: 2018-05-18南通市金马包装材料有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-05-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an EPS foam article which comprises an EPS raw material and a foaming agent; and the mass of the foaming agent is 4.5-7.2% of that of the EPS raw material. The invention further discloses a production technology of the EPS foam article. The production technology comprises the following steps of S1, stock preparation, S2, heating, S3, pre-foaming, S4, curing, S5, moulding, S6, cooling, S7, drying and S8, aftertreatment. The EPS foam article is low in apparent density and high in flexural strength, is of a closed cell structure internally provided with a large number of fine air bubbles and is long in service life. The production technology of the EPS foam article is stable and simple in technological process; the cooling is carried out through a cooling system, so that manual operation is reduced, the cooling effect is good, and the drying time is shortened; cooled water is subjected to settlement by a settling pool, so that pipe clogging is avoided; and the water is softened by water treatment equipment, so that a mould of a forming machine is effectively protected, the service life of the mould is prolonged, the maintenance cost is reduced, and the rate offinished EPS foam is raised.
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Description

technical field

[0001] The invention belongs to the technical field of EPS molding, and in particular relates to an EPS foam product and a production process thereof. Background technique

[0002] Polystyrene resin, referred to as EPS in English, commonly known as a copolymer of polystyrene and styrene, is made of styrene monomer in a certain amount of pure water, adding initiator, dispersant, stabilizer, A polymer material prepared by suspension polymerization of foaming agent and the like. EPS particles and foaming agent can be pre-foamed, matured and molded to produce foamed plastic products, which have the advantages of light weight, low price, low thermal conductivity, low water absorption, good electrical insulation, sound insulation, and moisture resistance. , is currently a high-quality packaging protection material, widely used in household appliances, electronics, machinery, handicrafts, pharmaceuticals, construction and decoration industries.

[0003] In the pro...

Examples

Embodiment 1

[0034] The invention discloses an EPS foam product, which comprises EPS raw material and foaming agent, the mass of the foaming agent is 4.5% of the mass of the EPS raw material, and the EPS foam product is prepared from the EPS raw material under the action of the foaming agent . The particle size of the EPS raw material is 0.6 mm. The blowing agent is n-pentane.

Embodiment 2

[0036] The invention discloses an EPS foam product, which comprises EPS raw material and foaming agent, the mass of the foaming agent is 6% of the mass of the EPS raw material, and the EPS foam product is prepared from the EPS raw material under the action of the foaming agent . The particle size of the EPS raw material is 0.7 mm. The blowing agent is isopentane.

Embodiment 3

[0038] The invention discloses an EPS foam product, which comprises EPS raw material and foaming agent, the mass of the foaming agent is 7% of the mass of the EPS raw material, and the EPS foam product is prepared from the EPS raw material under the action of the foaming agent . The particle size of the EPS raw material is 0.5 mm. The blowing agent is n-pentane or isopentane.