EP1233689B1 - Plastic material and a method for making the same - Google Patents

Plastic material and a method for making the same Download PDF

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Publication number
EP1233689B1
EP1233689B1 EP00966187A EP00966187A EP1233689B1 EP 1233689 B1 EP1233689 B1 EP 1233689B1 EP 00966187 A EP00966187 A EP 00966187A EP 00966187 A EP00966187 A EP 00966187A EP 1233689 B1 EP1233689 B1 EP 1233689B1
Authority
EP
European Patent Office
Prior art keywords
holes
cut
hole
plastic
spread
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00966187A
Other languages
German (de)
French (fr)
Other versions
EP1233689A1 (en
Inventor
Kari Laaksonen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fagerdala Tuotanto Oy
Original Assignee
Fagerdala Tuotanto Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fagerdala Tuotanto Oy filed Critical Fagerdala Tuotanto Oy
Publication of EP1233689A1 publication Critical patent/EP1233689A1/en
Application granted granted Critical
Publication of EP1233689B1 publication Critical patent/EP1233689B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C21/00—Attachments for beds, e.g. sheet holders, bed-cover holders; Ventilating, cooling or heating means in connection with bedsteads or mattresses
    • A47C21/04—Devices for ventilating, cooling or heating
    • A47C21/042—Devices for ventilating, cooling or heating for ventilating or cooling
    • A47C21/046—Devices for ventilating, cooling or heating for ventilating or cooling without active means, e.g. with openings or heat conductors

Definitions

  • the present invention relates to a plastic material and a method for making the same.
  • the plastic material is particularly a cellular plastic, for example, a closed-cell plastic, from which various paddings, impact absorbers, or flotation materials and similar are made.
  • Publication FR-A1-2664475 describes a shock absorbing insole of a shoe.
  • the insole contains small holes but also bigger openings that are kept open all the time. There is no hint of closed but openable cuts in the publication.
  • the present invention is intended to improve both the product and its method of manufacture.
  • a product is achieved, which is less sweaty than before, with perforations that can be easily cleaned by means of the method according to the invention.
  • Figure 1 shows a material according to the invention after suitable cuts have been made in it and Figure 2 shows the same material in a state in which the cut-away inner parts of the holes are being removed.
  • Figures 1 and 2 are self-explanatory. Annular cuts, the interiors 2 of which form cylindrical pieces that must be removed to form a hole, are stamped or otherwise made in a sheet-like material 1. Of course, the shape of the piece to be removed can be some other than that of the circular hole shown. According to the invention, removal is assisted by making a cut 3 on at least one side of hole 2 being formed, though if desired a cut can be made on both sides of the hole.
  • Figure 2 shows how cut 3 is opened by spreading material 1 to the sides, providing free space for the cutaway interior 2 of the hole, which can be easily removed by shaking or, for example, using compressed air.
  • interior 2 may drop out with no mechanical assistance at all.
  • its electrical properties may make it cling to the edge of spread cut 3, from which it can be easily detached by, for instance, using compressed air.
  • the hole to be formed can in principle be any shape whatever. If it is wished to use the method to form decorative holes, it will work quite as well as for round holes. Cuts 3 may be on either or both sides of the holes and may run in a direction other than the longitudinal direction of the piece of material. In they run transversely, stretching must take place longitudinally. Slanting cuts 3 will function in the said manner without difficulty.
  • a product manufactured according to the invention is suitable for any use, in which, for example, it comes in contact with or close to the skin, when its sweatiness will become an important factor. Breathability can be improved by using slits in addition to perforations.

Landscapes

  • Laminated Bodies (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)

Abstract

A material to be used as an impact-absorbing, warming, flotation, padding, or similar material (1), comprising a plastic-based basic substance, particularly a cellular plastic, with holes to reduce its sweatiness or for other purposes. According to the invention, the holes (2) have at least one cut (3), to permit the hole/cut to be spread. The interior (2) of the holes, which has been cut away but has remained in place, can be easily detached by spreading the material, when the cutaway part will drop out by itself, or with the aid of a suitable mechanical operation, such as blowing with compressed air.

Description

  • The present invention relates to a plastic material and a method for making the same. The plastic material is particularly a cellular plastic, for example, a closed-cell plastic, from which various paddings, impact absorbers, or flotation materials and similar are made.
  • Attempts have been made particularly to make materials intended for the above purposes breathable, either by slitting them, as disclosed in Finnish patent application 972210 or by perforating them. Holes are made conventionally at suitable distances according to a regular pattern in a sheet-like material of suitable thickness.
  • A serious drawback in making perforated materials in that, while the annular cut required by the desired hole can certainly be easily made in many different ways, it is extremely difficult to remove the cut piece to open the hole. This is naturally mainly due to the material, which 'grips' the cut-away piece of material, tending to hold it in place. The holes have therefore had to be opened by practically manual cleaning. Obviously, modern production cannot afford manual work, if an automated system is possible.
  • Publication FR-A1-2664475 describes a shock absorbing insole of a shoe. The insole contains small holes but also bigger openings that are kept open all the time. There is no hint of closed but openable cuts in the publication.
  • The present invention is intended to improve both the product and its method of manufacture. Thus, according to the invention, a product is achieved, which is less sweaty than before, with perforations that can be easily cleaned by means of the method according to the invention.
  • The benefits and advantages referred to above and others are achieved in the manner stated in the characterizing section of the accompanying Claims.
  • The invention is described in greater detail with reference to the accompanying drawings, in which
    Figure 1 shows a material according to the invention after suitable cuts have been made in it and
    Figure 2 shows the same material in a state in which the cut-away inner parts of the holes are being removed.
  • Figures 1 and 2 are self-explanatory. Annular cuts, the interiors 2 of which form cylindrical pieces that must be removed to form a hole, are stamped or otherwise made in a sheet-like material 1. Of course, the shape of the piece to be removed can be some other than that of the circular hole shown. According to the invention, removal is assisted by making a cut 3 on at least one side of hole 2 being formed, though if desired a cut can be made on both sides of the hole.
  • Figure 2 shows how cut 3 is opened by spreading material 1 to the sides, providing free space for the cutaway interior 2 of the hole, which can be easily removed by shaking or, for example, using compressed air. When the material is being spread, interior 2 may drop out with no mechanical assistance at all. However, its electrical properties may make it cling to the edge of spread cut 3, from which it can be easily detached by, for instance, using compressed air.
  • It is obvious that the said method and material can be applied to many non-rigid basic materials, in which similar problems appear. However, cellular plastic appears to be the most usually manufactured of such materials, so that the need to develop the method and product is greatest in connection with it.
  • It is obvious that the invention can be varied in many ways. For example, the hole to be formed can in principle be any shape whatever. If it is wished to use the method to form decorative holes, it will work quite as well as for round holes. Cuts 3 may be on either or both sides of the holes and may run in a direction other than the longitudinal direction of the piece of material. In they run transversely, stretching must take place longitudinally. Slanting cuts 3 will function in the said manner without difficulty.
  • A product manufactured according to the invention is suitable for any use, in which, for example, it comes in contact with or close to the skin, when its sweatiness will become an important factor. Breathability can be improved by using slits in addition to perforations.

Claims (7)

  1. A material (1) to be used as an impact-absorbing, warming, flotation, padding, or similar material, and comprising a plastic-based basic substance, particularly cellular plastic, and holes to reduce its sweatiness or for other purposes, characterized in that the holes (2) to be formed also include at least one cut (3) to permit the hole/cut to be spread.
  2. A material according to Claim 1, characterized in that each hole (2) includes two cuts (3) starting from either side of it.
  3. A material according to Claim 1, characterized in that the cuts (3) run in essentially one direction and start from the holes (2) in essentially opposite directions.
  4. A material according to Claim 1, characterized in that the holes (2) are round or of a desired shape.
  5. A method for making an impact-absorbing, warming, flotation, padding, or similar material (1), comprising a plastic-based basic substance, particularly cellular plastic, with holes to reduce its sweatiness or for other purposes, characterized in that at least one cut (3) is made in the material, in connection with or after the stamping or other manufacture of the holes (2), to permit the hole/cut to be spread.
  6. A method according to Claim 5, characterized in that during the manufacture of the holes, the cutaway interior (2) of the hole is removed by spreading the material, when the cut/hole will open and release its grip on the cutaway interior.
  7. A method according to Claim 6, characterized in that the cutaway interior of the holes is finally detached by mechanical shaking, by blowing with compressed air, or in another suitable manner.
EP00966187A 1999-10-04 2000-10-04 Plastic material and a method for making the same Expired - Lifetime EP1233689B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI992145A FI113034B (en) 1999-10-04 1999-10-04 Plastic material and method for making it
FI992145 1999-10-04
PCT/FI2000/000853 WO2001024663A1 (en) 1999-10-04 2000-10-04 Plastic material and a method for making the same

Publications (2)

Publication Number Publication Date
EP1233689A1 EP1233689A1 (en) 2002-08-28
EP1233689B1 true EP1233689B1 (en) 2006-06-14

Family

ID=8555410

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00966187A Expired - Lifetime EP1233689B1 (en) 1999-10-04 2000-10-04 Plastic material and a method for making the same

Country Status (6)

Country Link
EP (1) EP1233689B1 (en)
AT (1) ATE329509T1 (en)
AU (1) AU7666300A (en)
DE (1) DE60028811D1 (en)
FI (1) FI113034B (en)
WO (1) WO2001024663A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI113158B (en) * 2001-04-05 2004-03-15 Kari Laaksonen Non-sweat-driven material
EP1443831A1 (en) * 2001-11-14 2004-08-11 Fagerdala Tuotanto Oy A breathable garment or protective device and the use thereof
US9315312B2 (en) * 2011-12-28 2016-04-19 Sealed Air Corporation (Us) Domed multilayer cushioning article

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2664475A1 (en) * 1990-07-10 1992-01-17 Buand Thierry Sock (sock lining), particularly for usual, sports and orthopaedic uses, preferably with sweat prevention and vibration prevention properties
US5705252A (en) * 1995-01-05 1998-01-06 Cascade Designs, Inc. Expanded foam products and methods for producing the same
FI101872B1 (en) * 1996-02-14 1998-09-15 Hannu Orkolahti Buoyancy suit
FI109677B (en) * 1997-05-26 2002-09-30 Fagerdala Tuotanto Oy Unbrushed material

Also Published As

Publication number Publication date
EP1233689A1 (en) 2002-08-28
ATE329509T1 (en) 2006-07-15
WO2001024663A1 (en) 2001-04-12
DE60028811D1 (en) 2006-07-27
FI113034B (en) 2004-02-27
FI19992145A (en) 2001-04-05
AU7666300A (en) 2001-05-10

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