This article addresses the common question of the Packaging Weights and Package Dimensions of the LINQSTAT Volume Conductive Film (VCF). This product is CAPLINQ’s equivalent product to 3M Velostat* material.

The packaging dimensions are made up of two specific components, the width of the rolls and the length of the rolls. Typically, if roll widths are longer than 36″ (91.4 cm), the width is folded on top of itself into what is know as a V-Sheet. For example, a 72″ (182.4 cm) roll is too wide to be sent as is, and so it is folded on top of itself before being rolled, giving a width of 36″ (91.4 cm). The length of the width will determine the outer circumference of the roll once added to the core roll diameter.

The packing weights are made up of 3 components:

1. The specific gravity (SG) of the material
2. The roll core weight and
3. The shipping pallet weight

Specific gravity
The specific gravity of CAPLINQ’s Linqstat material is 1.08g/cc. This means that a roll that is 72″ (182.4 cm) wide by 150′ (4572 cm) long by 0.004″ (0.01016 cm) thick will have a weight of 20.3 lbs as shown below:
(182.4 cm) x (4572 cm) x (0.01016 cm) x 1.08g/cc = 9.175g = 9.2kgs (20.3 lbs).

Roll Core Weight
The Linqstat material - once prepared - is rolled onto a core so that it can be handled more easily, or mounted onto automatic equipment. This core weighs approx. 0.25 lbs/in, which translates to 9lbs for a 36″ (91.4 cm) width.

Shipping Pallet Weight
To ship the rolls, they are normally loaded onto pallets for ease of transport. These pallets each weigh approx. 35lbs.

Example for rolls of 72″ width x 0.004″ thick Linqstat

Using the information above, we can see that a roll of 72 in x 150 ft. roll will weigh is 29 lbs (13 kgs), and for a roll that is 72 in. x 750 ft. will weigh 110 lbs (50 kgs). We add to this the 35 lbs. weight of the pallet and we get the following:

• 6 rolls of 72 in x 150 ft x 0.004 in, weighs 209 lbs and for 12 rolls, it is 383 lbs.
• 2 rolls of 72 in x 750 ft x 0.004 in, weighs 255 lbs and for 4 rolls, it is 475 lbs.

Tables of these values are shown below.

LINQSTAT VCF: 72″ (in.) x 750′ (ft) x 0.004″ (in.) in V-Sheet

LINQSTAT VCF: 72″ (in.) x 150′ (ft) x 0.004″ (in.) in V-Sheet

* 3M is a registered trademark of 3M Corporation. Velostat is a trademark of 3M Corporation.
Neither is affiliated with this site.

With the industry’s ongoing drive to eliminate the hazardous substances through the 2002/95/EC directive - Restriction of Hazardous Substances (RoHS), particularly Heavy Metals and Brominated Flame Retardants (PBBs & PBDEs), the question often arises whether MJ Gordon’s Carnauba Wax Aerosol Spray complies with the directive given that it [...]

[Read more →]

Polyimide pressure sensitive adhesive (PSA) tape is actually made up of two separate steps. The first is the manufacture of the Polyimide film, itself (the generic name of of DuPont’s tradename Kapton®), and the second is [...]

[Read more →]

Lately, CAPLINQ has been fielding questions about what exactly the right time is to use carnauba wax aerosol spray. To get better insight into this question, it may be best to start with the opposite question, and work our way back.

Even before we address this, let me start by saying that carnauba wax, in its solid form is used by most epoxy mold compound formulators as one of the waxes used to [...]

[Read more →]

A question often asked to CAPLINQ in particular or among peers in general is, “When is a generic material (such as Polyimide Tape vs. Kapton Tape or Volume-Conductive Linqstat™ Film vs. Velostat™) good enough?” The answer of course is simple, it is [...]

[Read more →]

With this entry I’d like to tackle the issue of thermal conductivity vs. thermal impedence in adhesive bondlines. Although some adhesive manufacturers may claim to have bulk thermal conductivity values higher than 30 W/m°K, device manufacturers need to appreciate that the bulk value is only [...]

[Read more →]