DE1753903C3 - Cellular plastic layer material - Google Patents
Cellular plastic layer materialInfo
- Publication number
- DE1753903C3 DE1753903C3 DE1753903A DE1753903A DE1753903C3 DE 1753903 C3 DE1753903 C3 DE 1753903C3 DE 1753903 A DE1753903 A DE 1753903A DE 1753903 A DE1753903 A DE 1753903A DE 1753903 C3 DE1753903 C3 DE 1753903C3
- Authority
- DE
- Germany
- Prior art keywords
- layer
- embossings
- polyethylene
- polyvinyl chloride
- plastic layer
- 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
Links
- 239000000463 material Substances 0.000 title claims description 21
- 229920003023 plastic Polymers 0.000 title claims description 11
- 239000004033 plastic Substances 0.000 title claims description 11
- 230000001413 cellular effect Effects 0.000 title claims description 8
- 238000000576 coating method Methods 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 10
- -1 Polyethylene Polymers 0.000 claims description 9
- 239000004698 Polyethylene Substances 0.000 claims description 9
- 229920000573 polyethylene Polymers 0.000 claims description 9
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 9
- 239000004800 polyvinyl chloride Substances 0.000 claims description 9
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 claims description 8
- 238000004049 embossing Methods 0.000 claims description 8
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 7
- 229920000642 polymer Polymers 0.000 claims description 4
- 239000011888 foil Substances 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 2
- 239000005033 polyvinylidene chloride Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 1
- 150000002527 isonitriles Chemical class 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/14—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation involving heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/14—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor using multilayered preforms or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/18—Thermoforming apparatus
- B29C51/20—Thermoforming apparatus having movable moulds or mould parts
- B29C51/22—Thermoforming apparatus having movable moulds or mould parts rotatable about an axis
- B29C51/225—Thermoforming apparatus having movable moulds or mould parts rotatable about an axis mounted on a vacuum drum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/07—Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F2201/00—Mechanical deformation of paper or cardboard without removing material
- B31F2201/07—Embossing
- B31F2201/0758—Characteristics of the embossed product
- B31F2201/0761—Multi-layered
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
- B32B2307/7242—Non-permeable
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
Description
Die F.rfindung betrifft ein zeitiges Kunststoffschichttnaterial aus einer ersten im wesentlichen aus Polyvinylchlorid oder Polyäthylen bestehenden Schicht mit einer Vielzahl von über ihre Obetiläche mit geringem Zwischenraum voneinander getrennt verteilt angeordneten Prägungen und einer zwischen den Prägungen mit der ersten Schicht verbundenen und die Prägungen verkleidenden zweiten aus im wesentlichen Polyvinylchlorid oder Polyäthylen bestehenden Schicht.The invention relates to a contemporary plastic layer material from a first layer consisting essentially of polyvinyl chloride or polyethylene a multitude of over their surface with little Interstices distributed separately from one another and one between the embossings with the first layer connected and the embossing clad the second made essentially of polyvinyl chloride or polyethylene layer.
Ein derartiges Material ist bekannt. Bei ihm bestehen die beiden Schichten aus Polyäthylen oder Polyvinylchlorid. Diese Materialien sind für Feuchtigkeit, Wasserdampf und Gase nicht völlig undurchlässig, so daß es sich als erforderlich erwiesen hat, die Durchlässigkeit vor allem für Gase herabzusetzen.Such a material is known. With him, the two layers are made of polyethylene or polyvinyl chloride. These materials are not completely impermeable to moisture, water vapor and gases, so that it has been found necessary to reduce the permeability, especially for gases.
Es ist ferner bekannt (Technische Rundschau Nr. 40 vom 21.09.62, Seite 17), daß man gute Wasserdampfund Gasdichtigkeit bei in dieser Richtung verbesserungsbedürftigen Materialien durch Beschichtungen mit Mischpolymerisaten des Vinylidenchlorids erreichen kann. Als ein übliches Mischpolymerisat ist das Mischpolymerisat des Vinylidenchlorids mit Acrylnitril genannt. Es ist festgestellt, daß die Beschichtungen beim Verschweißen keine Schwierigkeiten bereiten.It is also known (Technische Rundschau No. 40 of 09/21/62, page 17) that you can get good water vapor Gas tightness in materials in need of improvement in this direction through coatings with Copolymers of vinylidene chloride can achieve. As a common copolymer, this is Copolymer of vinylidene chloride with acrylonitrile called. It is found that the coatings at Welding does not cause any difficulties.
Weiterhin ist bekannt (FR-PS 12 82 777), daß man Polyvinylidenchlorid auch im Zusammenhang mit teiligem Kunststoffschichtmaterial des Aufbaus einsetzen kann, wie er einleitend beschrieben ist.It is also known (FR-PS 12 82 777) that you can use polyvinylidene chloride in connection with can use part plastic layer material of the structure, as described in the introduction.
Beim Einsatz des oben genannten Mischpolymerisats des Vinylidenchlorids im Zusammenhang mit dem eingangs beschriebenen: zelligen Material haben sich aber folgende Probleme ergeben. Das Zusammenwalzen öder Doppeln Von Streifen oder Bahnen aus diesen unterschiedlichen Materialien ist so aufwendig und dadurch so teuer, daß eine Verwendung dieser Streifen oder Bahnen für Verpacküngszwecke im allgemeinen untragbar ist Außerdem ist solches zelliges Kunststoffschichtmaterial verhältnismäßig dick und schwer, was seine Verwendung als Verpackungsmaterial stark beeinträchtigtWhen using the above-mentioned copolymer of vinylidene chloride in connection with the initially described: cellular material have become but the following problems arise. The rolling together or doubling of strips or webs of these different materials is so elaborate and so expensive that a use of these strips or webs for packaging purposes in general In addition, such cellular plastic sheet material is unsustainable relatively thick and heavy, which makes its use as a packaging material strong impaired
Der Erfindung liegt die Aufgabe zugrunde, ein zelliges Kunststoffschichtmaterial der eingangs genannten Art zu schaffen, das gegen Wasserdampf und Gas weitgehend dicht ist und während seines Einsatzes diese seine Eigenschaft nicht verliert sowie verhältnismäßigThe invention is based on the object of a cellular To create plastic layer material of the type mentioned, which is against water vapor and gas is largely tight and does not lose its property during its use and is proportionate
ίο billig istίο is cheap
Eine erste Lösung dieser Aufgabe sieht gemäß der Erfindung vor, daß bei dem eingangs beschriebenen Kunststoffschichtmaterial beide Schichten innen einen Überzug aus einem Mischpolymer aus VinylidenchloridA first solution to this problem provides, according to the invention, that in the case of the initially described Plastic layer material both layers inside a coating made of a mixed polymer of vinylidene chloride
is und Acrylnitril aufweisen.is and acrylonitrile.
Durch diese Ausgestaltung des Materials ist erreicht daß der nicht außenliegende wasserdampf- und gasdichte Überzug einerseits gegen äußere Einwirkungen geschützt ist und bestimmte Metalle oder sonstige Werkstoffe nicht angreifen kann, andererseits das Verschweißen gleicher Schichtmaterialien in den Verbindungsbereichen zwischen den Zellen sichergestellt ist, wodurch eine optimale dichte Verschweißung erzielt wird. Der im Verhältnis zu den äußeren Schichten sehr dünne dichtende Überzug bewirkt außerdem, daß das zellige Kunststoffschichtmaterial mit einem entsprechenden Papiererzeugnk preislich konkurrieren kann.This configuration of the material ensures that the non-external water vapor and gas-tight coating on the one hand is protected against external influences and certain metals or other Materials cannot attack, on the other hand the welding of the same layer materials in the Connection areas between the cells ensured is, whereby an optimal tight weld is achieved. The relative to the external Layers of very thin sealing coating also causes the cellular plastic layer material with can compete in price with a corresponding paper product.
Eine zweite Lösung der Aufgabe sieht gemäß der Erfindung vor, daß bei einem Kunststoffschichtmaterial der eingangs beschriebenen Art beide Schichten aus zwei Folien und einer zwischen diesen angeordneten Zwischenschicht aus einem Mischpolymer aus Vinylidenchlorid und Acrylnitril bestehen.A second solution to the problem provides, according to the invention, that in the case of a plastic layer material of the type described above, both layers of two foils and one arranged between them The intermediate layer consists of a mixed polymer of vinylidene chloride and acrylonitrile.
Durch diesen Vorschlag ist erreicht, daß ebenso wie bei der ersten Lösung, der die Wasserdampf und Gasdichtigkeit gewährleistende Überzug sich nicht an der Außenseite der beiden Schichten bzw. hier der beiden Folien befindet. Dadurch, daß der gasdichteBy this proposal it is achieved that, as with the first solution, the water vapor and The coating ensuring gas tightness is not on the outside of the two layers or here the two slides. Because the gas-tight
Überzug nicht nur außen sondern . nch innen von der aus weniger kostspieligem Material hergestellten äußeren Deckschicht eingeschlossen ist. ist eine verstärkte Ausführungsform des zelligen Kunststoffschichtmaterials sichergestellt, ohne daß die Kosten fü; ihre Herstellung wesentlich höher als bei der ersten Ausführungsform sind.Coating not just outside but. nch inside of the outer cover layer made of less expensive material is included. is a Reinforced embodiment of the cellular plastic layer material ensured without the costs for; their production are much higher than in the first embodiment.
Die vorgeschlagenen Kunststoffschichtmaterialien lassen sich in einfacher Weise nach dem Verfahren herstellen, das mit dem deutschen Patent 15 46 867 geschützt und in der zugehörigen Patentschrift beschrieben ist. Danach wird folgendermaßen bei der Herstellung vorgegangen:The proposed plastic layer materials can be easily processed according to the method Manufacture, which is protected by the German patent 15 46 867 and described in the associated patent specification is. Then proceed as follows during production:
Ein Überzug aus einem Mischpolymerisat des Vinylidenchlorids mit Acrylnitril wird mittels einer Gravurwalze (Tiefdruck-Formzylinder) gleichmäßig auf eine im wesentlichen aus Polyvinylchlorid oder Polyäthylen bestehende Schicht aufgetragen. Diese wird dann um eine beheizte Trommel geführt, wobei die Temperatur mindestens eines Teils der Dicke der Schicht auf einem unterhalb ihrer SchmelztemperaturA coating of a copolymer of vinylidene chloride with acrylonitrile is made by means of a Gravure roller (gravure forme cylinder) evenly on a substantially made of polyvinyl chloride or polyethylene existing layer applied. This is then passed around a heated drum, the Temperature of at least part of the thickness of the layer at one below its melting temperature
liegenden Wert gehalten wird. Die Schicht wird anschließend während ihres Umjaufs um die Trommelvalue is maintained. The layer is then wrapped around the drum as it circulates
■ auf ihrer beschichteten Seite mit Heißluft getrocknet■ dried on the coated side with hot air
und zu einer Vorratsrolle geführt.and led to a supply roll.
In der Zeichnung sind beispielsweise zwei Ausführungsformen des Erfindungsgegenständes dargestellt. In the drawing, for example, two embodiments of the subject matter of the invention are shown.
Nach F i g. i hat man eine erste und zweite Schicht B mit jeweils innenliegendem, von ihnen eingeschlosse-According to FIG. i you have a first and a second layer B , each with an inner, enclosed by them-
nem und geschütztem undurchlässigem Überzug / verwendet. Die Schichten ^bestehen aus Polyvinylchlorid oder Polyäthylen, während der Überzug / ein Mischpolymerisat aus Polyvinylidenchlorid und Acrylnitril ist Die Überzüge / sind dort, wo sie miteinander verbunden, d.h. verschmolzen, sind, im wesentlichen homogen und verschließen die Zellen dauerhaft abdichtend,nem and protected impermeable coating / used. The layers consist of polyvinyl chloride or polyethylene, while the coating / a copolymer of polyvinylidene chloride and acrylonitrile is The coatings / are essentially where they are joined, i.e. fused, to one another homogeneous and permanently seal the cells,
Fig.2 zeigt eine andere Ausführungsform der Erfindung, bei der zwei Folien verwendet werden, Aus Fig.2 ist ersichtlich, daß in jeder Folie der Überzug / zwischen Schichten B eingeschlossen istFIG. 2 shows another embodiment of the invention in which two films are used. From FIG. 2 it can be seen that the coating / between layers B is enclosed in each film
Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
Claims (2)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US33609763 US3405020A (en) | 1963-12-26 | 1963-12-26 | Method and apparatus for the manufacture of plastic laminates and cellular materials |
| DE1546867 | 1964-12-23 | ||
| AU23461/67A AU422483B2 (en) | 1963-12-26 | 1967-06-21 | Method and apparatus forthe manufacture of cellular materials andthe resultant products |
| US73396568A | 1968-06-03 | 1968-06-03 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE1753903A1 DE1753903A1 (en) | 1977-05-12 |
| DE1753903B2 DE1753903B2 (en) | 1979-12-20 |
| DE1753903C3 true DE1753903C3 (en) | 1980-10-02 |
Family
ID=27422747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1753903A Expired DE1753903C3 (en) | 1963-12-26 | 1964-12-23 | Cellular plastic layer material |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1753903C3 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5910902B2 (en) * | 1977-10-20 | 1984-03-12 | マリオン・エフ・ルデイ | Elastomeric cushion devices for products and objects |
| DE3000516A1 (en) * | 1980-01-09 | 1981-07-16 | Roland Dipl.-Kfm. 7022 Leinfelden-Echterdingen Belz | COMPOSITE FILM, ESPECIALLY TOILET SEAT PAD, AND METHOD AND DEVICE FOR THEIR PRODUCTION |
| DE3126979A1 (en) * | 1980-01-09 | 1982-09-30 | Roland Dipl.-Kfm. 7022 Leinfelden-Echterdingen Belz | COMPOSITE FILM |
| US6749887B1 (en) * | 2001-11-28 | 2004-06-15 | Lifescan, Inc. | Solution drying system |
-
1964
- 1964-12-23 DE DE1753903A patent/DE1753903C3/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1753903B2 (en) | 1979-12-20 |
| DE1753903A1 (en) | 1977-05-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OGA | New person/name/address of the applicant | ||
| BGA | New person/name/address of the applicant | ||
| C3 | Grant after two publication steps (3rd publication) | ||
| 8339 | Ceased/non-payment of the annual fee |