CN102079391A - Compression packing method of soft bed cushion - Google Patents

Abstract

The invention discloses a compression packing method of a soft bed cushion. The method comprises the following steps: preassembling a single valve on the bleeder hole packed of a thin film; sheathing a molded bed cushion with the film and sealing adhesively; compressing the sealed bed cushion compulsively by utilizing a large-tonnage compressor; vacuumizing at the single valve when the bed cushion is compressed to 5-8 centimeters; and carrying out seal processing of the bed cushion when vacuum degree reaches 10<-2> torr, and ensuring the volume of the compressed bed cushion is unchanged. According to the invention, the volume of the compressed bed cushion is reduced to 1/4 of that of the original bed cushion, the transportation and storage costs are lowered greatly, the price competition advantage is created, the bed cushion can be exported to all over the world, the limitation of regional sales is broken, thus being a reform of the sales and transportation of the bed cushion.

Description

Mattress of flexible body compression packing method

The present invention relates to mattress of flexible body compression packing method.

Along with growth in the living standard, generally use mattress of flexible body on the bed of modern room, mattress of flexible body is used for satisfying the requirement of people's rest traveling comfort, so its internal application a plurality of drop centre type springs as support, make up cladding with other auxiliary material again, so seem that volume is very big, be not easy to packed and transported, transport and storage cost height, sell radius and be confined in 500 kilometers, be regional and sell, especially the export trade outlet does not more have possibility, for example 150 * 200cm mattress exports to a certain city of a state: explant price is 47 U.S. dollars, working expenses is 40 U.S. dollars, and the local factory of this state explant price is 120 U.S. dollars, and profit margin has only 33 U.S. dollars, little for middle wholesale dealer's attractive force, lack price competitiveness.

The objective of the invention is to overcome the deficiencies in the prior art and provide a kind of and dwindle the mattress volume, reduce the transport and storage cost, create the mattress of flexible body compression packing method of price competitiveness.

According to the foregoing invention purpose, the present invention is achieved through the following technical solutions: mattress of flexible body compression packing method is characterized in that: a. pre-installs the self-control check valve on the aspirating hole of packing film; B. with above-mentioned film the moulding mattress is cladded, and on plastic welder, the film periphery is carried out adhesive seal; C. the mattress of sealing mouth moves to and carries out enforce compression on the compressor of mattress; When treating that d. mattress is compressed to thickness 5-8 centimetre, connect vacuum pump at the check valve place and vacuumize; E. work as degree of vacuum and reach 10 ^-2During torr check valve is carried out encapsulation process, the compressed mattress of release can enter the storage transportation then.

After the compressed packing of mattress of flexible body of the present invention, thickness reduces to 5-8cm, and volume-diminished reduces the transport and storage cost of mattress to original 1/4 greatly, as being example still to export certain state, working expenses is reduced to 10 U.S. dollars by 40 original U.S. dollars, adds that 2 U.S. dollar packing charges also have only 12 U.S. dollars, makes profit margin increase to 61 U.S. dollars, created the price competitiveness condition, mattress is exported to becomes possibility all over the world, has broken the limitation that sell in the mattress zone, is the revolution that mattress is sold transportation.

Below Compressino package technology for soft mattress of the present invention is described in detail again.

The mattress of compression packing does not produce permanent deformation and can return to original state in order to make out bag eliminate mattress after the vacuum after being transported to the destination, and the core part drop centre type spring of mattress in manufacturing process must meet following condition:

(1) press single-coil spring maximum distortion (under the peak load) formula:

$f_i=\frac{\mathrm{\&pi;}{D}_2^2}{\mathrm{Gdk}}\&times;{\mathrm{\&tau;}}_f$

F in the formula _i---maximum deformation quantity d---steel wire diameter

D ₂---small end spring mean coil diameter k---curvature correction factor

The coefficient of transverse elasticity τ of G---steel wire _f---the spring permissible stress

Maximum deformation quantity f according to spring _i, calculate spring lead angle α again:

$\mathrm{tg\&alpha;}=\frac{t}{2\mathrm{\&pi;}{D}_2}$

T in the formula---spring pitch.

As maximum deformation quantity f _iWhen replacing t, $\mathrm{tg\&alpha;}=\frac{f_i}{2\mathrm{\&pi;}{D}_2}$

Require its wire spring lead angle α must not be greater than 18 °.

(2) when drop centre type spring outside diameter between Ф 65-Ф 90mm, the spring height is not more than 160mm, the number of turns under the conditions of 5 circles, cone small end circular section long-pending with the long-pending ratio in the big end of cone circular section must not be less than 38: 100, i.e. S _Little/ S _Greatly＞0.38.

(3) for guaranteeing suppressing smoothly of mattress of flexible body, drop centre type spring height h must not be greater than 2.56 with the ratio of cone axis of small circle d

Be h/d≤2.56

(4) the bed core of mattress of flexible body must carry out 3 times in advance and suppresses processing, eliminates the residual deformation amount of bed core.

Making mattress of flexible body with the drop centre type spring that meets above-mentioned technical requirements, is the condition precedent of implementing Compressino package technology for soft mattress, avoids length of spring compressed to surpass elastic limit and causes and can't restore.

To narrate the concrete processing step of compression packing of mattress of flexible body below:

A. check valve is made in prepackage by oneself on the aspirating hole of packing film; This film must be that tensile strength is greater than 5Kgf/mm ², thickness is greater than the high strength polyurethane laminated film of 0.1mm;

B. the film of moulding mattress cladding, promptly at the thin layer of laying up and down of mattress, or with the bag film of 3 faces adhesive seal, the present invention has adopted at mattress and has laid thin layer up and down, to have above being placed on of check valve, by plastic welder the film periphery is carried out adhesive seal, finish the cladding of moulding mattress;

C. the mattress that will seal mouth moves to and carries out enforce compression on the compressor of mattress, can be compressed to the volume minimum for making mattress of flexible body, to reduce the pumpdown time, raises labour productivity, and compressor of mattress must be selected the above compressor of 60T for use;

When treating that d. mattress is compressed to thickness 5-8 centimetre, connect rotary-vane vaccum pump at the check valve place and vacuumize;

E. work as degree of vacuum and reach 10 ^-2During torr, check valve is carried out encapsulation process, concrete i.e. spinning upper nut on the bolt shank of self-control check valve, the check valve valve is closed dead, make atmosphere produce the squeese pressure (calculating) of 30T, thereby guarantee that then atmosphere has the 30T squeese pressure to mattress all the time as long as the degree of vacuum of mattress is not destroyed by mattress surface area 200 * 150cm to the mattress of vacuum compression, make the constancy of volume of the moulding mattress that is compressed final vacuum, compressed mattress can enter the storage transportation after the release.

Claims (1)

1. mattress of flexible body compression packing method is characterized in that:

A. check valve is made in prepackage by oneself on the aspirating hole of packing film;

B. with above-mentioned film the moulding mattress is cladded, and on plastic welder, the film periphery is carried out adhesive seal;

C. the mattress of sealing mouth moves to and carries out enforce compression on the compressor of mattress;

When treating that d. mattress is compressed to thickness 5-8 centimetre, connect vacuum pump at the check valve place and vacuumize;

E. work as degree of vacuum and reach 10 ^-2During torr check valve is carried out encapsulation process, the compressed mattress of release can enter the storage transportation then.